Rotary electro-magnetic motor



(No Model.) 2 sheets-sheen 1. J. B. ATWATER.

V ROTARY ELEOTRO MAGNETIC MOTOR.

No. 278,760. Patented June 5,1883.

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J. B. ATWATER.

ROTARY ELEOTRO MAGNRTIO MOTOR. NO. 278,760. Patented June 5,1883.

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UNITED STATES PATENT ()FFICE.

ROTARY ELECTR'O-MAGNETIC MOTOR.

SPECIFICATION forming part of Letters Patent No. 278,760, dated June 5,1883. Application filed November 27, 1882. (No model.)

To all whom it may concern.-

Be it known that I, J OHN B. Arwnrnn, a citizen of the United States,residing at Ohicago, in the county of Cook and State of Illinois, haveinvented a new Rotary Magnetic Motor, of which the following is aspecification. I

My invention relates to rotary magnetic motors having a number ofexternal rotating armatures and a double set of rigid or stationarymagnets having angularv pole extensions, the said extensions standingalternately in opposite directions, whereby a very effective and compactmotor is obtained, as will be hereinafter described.- I

In the accompanying drawings, Figure l is a top view of the machine.Fig. 2 is an elevation of the same. Fig. 3 is a detail section of aportion of the switch in the line as m of Fig. 1. Fig. 4. is a detailsectional view of the switch-lever and its attachment to the main frame,the parts in the rear being shown in elevation. Fig. 5 is a detail topview of the switch-gear.

In the drawings, A represents a suitable frame, consisting of a bottom,a, columns a, and radial top connections, a? a a, united to a centralboss, a

" An upright central shaft, B, has its upper bearing in the boss a andits lower bearing in a suitable foot-block, b. To this shaft B a wheel,I), is fixedly attached, which carries a number of vertical armatures,G, circularly and equidistantly arranged, as shown.

Between the armatures C and shaft B, and fastened by means of suitablesupportingstands, (I, to the bottom a, aretwo sets of horseshoe-magnets,D D and D D, having coils E E E E, of ordinaryinsulated wire, andangular pole extensions (1 (Z and held in proper position opposite thetraveling armatures. The one set of magnets, D, is provided with longpole extensions (1, and the other set of magnets, D, with short poleextensions d-, and the so provided magnets are arranged in alternateorder around the-center of the machine, as shown. The long poleextensions stand with their ends or toes d toward the approachingarmatures, the said ends, by reason of the cocentric arrangement of theextensions, being nearer the center of the machine or more distant fromthe path of the armatures than the heels (1" of the magnets, and thusthe greatest attraction is always toward the heel of said long poleextensions. The position of the short pole extensions (1 is the reverseof that of the long ones, and their eccentric relation to the armaturesis also reversed; or, in other words, their heels d stand toward theapproaching armatures, so that in the operation of the machine thearmatures pass said heels (1" before passing the toes d, and the heels(2" of the pole extensions d are farther away from the path of thearmatures than the toes. By this arrangement of the two sets of magnetsand their pole extensions the attractional force of each increases inthe same direction all around when the magnets are charged. The lowercoils, E E", of the magnets are connected by means of conductingwires eto bindingposts 6, as shown, suitably attached to the frame A, while oneof the binding-posts c is or galvanic battery by means of aconductingwire, X.

The upper coils, E E are, by means of conducting-wires c 0, connected toa switch, F, as shown. This switch F consists of a conducting lever, f,pivoted at f to a nonconducting arm, G, and having a conducting springextension, j, with platinum-plated tappet-heads f'", and a pair ofplatinum-faced binding-plates, gg, fastened to anon-conducting arm, G,opposite to each other, at such distance as to allow the headsf areasonable amount of play between them. Thearms G G are suitablyfastened to the frame A, and a spring, g, fastened to the frame A and toa projecting hook, f of the lever f, applies the necessary tension ofthe said lever toward a cam-whee], H, on the shaft B. The lever f isprovided with an anti-friction roller, f which bears against the cams hof the wheel H. The wheel H is insulated by means of .a hardnrubber orother non-conducting bushing, 71 The number of said cams h is equal tothe number of armatures 0, whereby the number of oscillations of thelever f is doubled. Now, as the lever f is connected by means of aconducting-wire, Y, with the positive pole of a galvanic battery, and asthe two conducting-wires e" are connected to the binding-plate g and theconducti'ngwires (2* to the binding-plate g, it will be seen that themag nets D D are alternately charged as the arma- I connected with thenegative pole of an electric tures 0 pass by them. The shape of the longpole extensions is preferably curved and tapering, although other shapesmay answer well, so long as the eccentric arrangement is retained. Theshort pole extensions stand in a reverse position in relation to thelong pole extensions, for the reason that, the corresponding armatureshaving been attracted from the toes to the heels of the long poleextensions, the preceding armatures are then attracted toward the heelsof. the short pole extensions; or, in other words, they serve to helpthe armatures in passing centers which occur between the breaking ofmagnetic force at the heels of the long pole extensions, and continuethe motion of the armature-wheel until the succeeding arm atures havearrived at the toes of the newly-charged long pole extensions and yieldto their attraction. It is proposed to use six or eight magnets inmachines of considerable power, halt the number otwhich. will have shortpole extensions.

It will be seen that the operation of my ma chine is to first draw onegiven rotating arma ture from the toe to the heel of a rigideeeentrically-arranged or inclined magnetic long pole extension, andimmediately after this to draw its next preceding rotating armaturealong from the heel to the toe of a short rigid inclined oreccentricallyarranged magnetic pole extension, and then to continue themotion of the armature-wheel by drawing the armature next i'ollowii'igthe given armature along the said long pole extension, and then to drawthe first-mentioned given armature from heel to toe of the said shortpole extension, whereupon a second succeeding armature following thegiven one is drawn from the toe to the heel of the said long poleextension, at which instant the armature next following the given onearrives at the next magnet, and is driven from the heel to the toe ofits short pole extension, at which time the given armature has arrivedat the next following pair of magnets, thus completing a fullhalf-rotation of the armature-wheel. A succession of similar movementswill complete a full rotation of the armature-wheel.

NVhat I claim as my invention, and desire to secure by Letters Patent,is-

1. In a magnetic motor, the combination, with external armatures C,which rotate around stationary magnets, of inclined oreccentrically-arranged magnets D and D, which respectively have long andshort pole extensions d (P, and are arranged in alternate order aroundthe center of the machine, with the toes d of the long pole extensionsand with the heels d" of the short pole extensions toward theapproaching armatures, whereby in the operation of the machine thearmatures approach the short pole extensions at the heels (1 and leavethem at the toes d, and approach the long pole extensions at the toes dand leave them at the heels (7., and thus the attractive force in bothsets of magnets increases in the same direction, substantially-asdescribed.

2. In a magnetic motor, the combination of the external. rotatingarmatures O, stationary magnets D D, constructed with long and shortpole extensions (1 d, and arranged in. pairs, and relatively inclined asshown, and a switchgear, F, for operating said magnets successively intwo alternate sets, substantially as and for the purpose described.

8. The switch F, consisting of the insulated sprii1g-leve1.- 1', havingtensioirspring g, antifriction rollerf, and tappet-heads f, insulatedcam-wheel H, insulated binding-plates y, in combination with therotating arma-tures (1-, stationary magnets l) 1), arranged in pairs, tobe operated in two alternate sets, substantially as and for the purposedescribed.

JOHN l3. ATLWYATIIR.

In presence of A. I). Bnnennn, CHAS. H". Roonns.

